RT info:eu-repo/semantics/bachelorThesis T1 A Grammatical Study of the Acquisition of Verbal Inflection in Monolingual English and Spanish A1 Fonseca Navarro, Lucía A2 Universidad de Valladolid. Facultad de Filosofía y Letras K1 Verbal inflection K1 Root infinitives K1 RI stage K1 Developmental stages K1 Monolingual children K1 English and Spanish K1 Flexión verbal K1 Infinitivo raíz K1 Etapa de infinitivos raíz K1 Etapa de desarrollo K1 Niños monolingües K1 Inglés y español K1 5701.11 Enseñanza de Lenguas AB This undergraduate dissertation presents a grammatical study on the acquisition of verbal inflection by comparing the spontaneous production of a monolingual English child (Benjamin) and a monolingual Spanish child (Emilio). The analysis deals with the production of verbal inflection in relation to their presence or absence, as well as the duration of the RI (root infinitive) stage, the different verb types (transitive, intransitive, copulative or semi copulative), with verbal forms (inflected, non-inflected, or RIs), and subject type (null or overt determiner phrases). The results of the study show that regarding the use of RIs and the duration of the RI stage, the monolingual English child lags behind his Spanish counterpart who shows acceleration in the acquisition of adult verbal inflection. This supports results obtained in previous works. However, the correlations between verb type and inflection, and subject type and inflection did not align with previous findings, with copulative verbs being scarcely used and with both children mainly using null subjects with RIs. YR 2025 FD 2025 LK https://uvadoc.uva.es/handle/10324/79907 UL https://uvadoc.uva.es/handle/10324/79907 LA eng NO Departamento de Filología Inglesa DS UVaDOC RD 26-ene-2026